The function wp_list_comments() outputs the comments in your theme, typically comments.php.
http://codex.wordpress.org/Function_Reference/wp_list_comments
That function handles the output of the next/previous page links IF you have limited the amount of comments being displayed. While this can be done in the function call directly the recommended way is through your WordPress admin control panel Settings > Discussion.
http://codex.wordpress.org/Settings_Discussion_SubPanel
You will see options about half way down for…
( ) Break comments into pages with [ ] top level comments per page and the (first/last) page displayed by default.
Hope that helps.
Thank you for reply.
You can check my code for comments.php and which one should i add ???
[Code moderated as per the Forum Rules. Please use the pastebin]
just solved i used my code to function.php and works… Thank you for helpful